Abstract: During the construction of a distribution automation system,there are too many topological errors,such as ambiguities in feeder management ranges,isolated islands,and inconsistent running modes,etc.Based on the automatic graphing method,the conceptual diagram of distribution network,which stands for the relations of topology in the distribution automation system,is used to display the overview of distribution network models through dynamic model extraction,and tree and spring layout processes.It can be used to provide a great assistance to model validation in distribution automation system technically for users.The validity of this method is verified by specific project application.